code: def test_1bpp():
      bpp = path.join(path.dirname(__file__), "data", "1bpp.bmp")
      bpp = freeimage.imread(bpp)
      assert bpp.sum()
      assert bpp.sum() < bpp.size
  
file_path: mahotas/mahotas/tests/test_freeimage.py
imports: import numpy
  from os import path
label_desc: Use image node_id 6 for calling a global function with example usage: test_1bpp() without return types